Particle Interactions & Conservation (Edexcel A Level Physics): Exam Questions

Exam code: 9PH0

22 mins7 questions
1
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The π particle has a mass of 140 MeV/ c2.

Which row of the table is correct for the antiparticle of a π ?

 

Particle classification

Mass/ MeV/c2

A

Baryon

+140

B

Baryon

-140

C

Meson

+140

D

Meson

-140

    2
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    Which of the following particles is an example of a fundamental particle? 

    • nucleus

    • neutrino

    • pion

    • proton

    3
    1 mark

    The Λ0 baryon has the quark content uds (one up, one down, one strange).

    The table shows four possible sets of values for the charge, baryon number and strangeness of the Λ0.

    Which row shows the correct values?

    Row

    Charge / e

    Baryon number

    Strangeness

    A

    0

    +1

    +1

    B

    0

    +1

    1

    C

    +1

    +1

    1

    D

    0

    1

    1

      1
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      Which row of the table summarises the mass and charge of an antineutron?

       

      Mass / u

      Charge / e

      A

      0

      0

      B

      0

      -1

      C

      1

      0

      D

      1

      +1

        2
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        A high-energy proton can interact with a photon to produce two particles.

        Which of the following could be the two particles produced?

        • n + π0

        • n + π+

        • π0 + π+

        • π + π+

        3
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        Which of the following particle equations is correct for the decay of a proton within a nucleus?

        • p → n + β+

        • p → p + β+

        • p → n + β+ + v

        • p → p + β+ + v